Historic Bridges in Pennsylvania
6,062 bridges built before 1951 in Pennsylvania still in service today.
Bridges Built Before 1951
The United States has 6,062 bridges in Pennsylvania built before 1951 that remain in active service. These structures are 75+ years old, many predate modern engineering codes and were not designed for today's traffic volumes and vehicle weights. The average design life of a bridge is 50 years, making these aging structures a significant infrastructure concern.
| Bridge | State | Condition | Year Built | Age (Years) | ADT |
|---|---|---|---|---|---|
| MILL CREEK | Pennsylvania | Fair | 1950 | 76 | 716 |
| BRANCH CONESTOGA RIVER | Pennsylvania | Fair | 1950 | 76 | 33,608 |
| PA TPK (I-76) | Pennsylvania | Fair | 1950 | 76 | 540 |
| PA TPK (I-76) | Pennsylvania | Fair | 1950 | 76 | 7,765 |
| LR274 CONEST.CR. | Pennsylvania | Fair | 1950 | 76 | 39,934 |
| PA TPK (I-76) | Pennsylvania | Fair | 1950 | 76 | 11,870 |
| TRIB TO E. BR. CONESTOGA | Pennsylvania | Fair | 1950 | 76 | 39,934 |
| TRIB TO LITTLE SWATARA | Pennsylvania | Poor | 1950 | 76 | 93 |
| MAIDEN CREEK | Pennsylvania | Fair | 1950 | 76 | 3,933 |
| MANATAWNY CREEK | Pennsylvania | Poor | 1950 | 76 | 800 |
| HAY CREEK | Pennsylvania | Fair | 1950 | 76 | 3,600 |
| POVERTY HOLLOW RUN | Pennsylvania | Fair | 1950 | 76 | 1,751 |
| WALLACE CREEK | Pennsylvania | Fair | 1950 | 76 | 3,751 |
| JEROME CREEK | Pennsylvania | Fair | 1950 | 76 | 1,588 |
| PRINCE HOLLOW RUN | Pennsylvania | Fair | 1950 | 76 | 309 |
| PARKS CREEK | Pennsylvania | Good | 1950 | 76 | 228 |
| PARKS CREEK | Pennsylvania | Fair | 1950 | 76 | 228 |
| WEST BRANCH TOMJACK CRK | Pennsylvania | Fair | 1950 | 76 | 2,064 |
| MURRAY CREEK | Pennsylvania | Fair | 1950 | 76 | 300 |
| BAILEY RUN | Pennsylvania | Fair | 1950 | 76 | 50 |
| FRENCH RUN | Pennsylvania | Poor | 1950 | 76 | 75 |
| CABIN RUN CREEK | Pennsylvania | Fair | 1950 | 76 | 10,089 |
| DEEP RUN | Pennsylvania | Fair | 1950 | 76 | 12,380 |
| TOHICKON CREEK | Pennsylvania | Good | 1950 | 76 | 12,380 |
| CREAMERY ROAD | Pennsylvania | Fair | 1950 | 76 | 12,487 |
| VAN SCIVER LAKE | Pennsylvania | Fair | 1950 | 76 | 1,442 |
| GALLOWS RUN | Pennsylvania | Fair | 1950 | 76 | 115 |
| W.BR.SUSQUEHANNA RIVER | Pennsylvania | Fair | 1950 | 76 | 3,405 |
| CHEST CREEK | Pennsylvania | Fair | 1950 | 76 | 526 |
| FIRELINE CREEK | Pennsylvania | Fair | 1950 | 76 | 1,367 |
| LESLIE RUN | Pennsylvania | Fair | 1950 | 76 | 1,665 |
| NESQUEHONING CREEK | Pennsylvania | Fair | 1950 | 76 | 1,400 |
| SINKING CREEK | Pennsylvania | Fair | 1950 | 76 | 80 |
| EAST BR BRANDYWINE CREEK | Pennsylvania | Poor | 1950 | 76 | 3,807 |
| STONEY RUN CREEK | Pennsylvania | Poor | 1950 | 76 | 3,497 |
| PA TPK (I-76) | Pennsylvania | Fair | 1950 | 76 | 200 |
| PA TPK (I-76) | Pennsylvania | Fair | 1950 | 76 | 7,289 |
| T-396 | Pennsylvania | Fair | 1950 | 76 | 39,934 |
| TRIB. TO FRENCH CREEK | Pennsylvania | Fair | 1950 | 76 | 39,934 |
| Trib. to Marsh Creek | Pennsylvania | Fair | 1950 | 76 | 39,934 |
| PA TPK (I-76) | Pennsylvania | Fair | 1950 | 76 | 200 |
| SR 4031 | Pennsylvania | Fair | 1950 | 76 | 46,178 |
| MARSH CREEK | Pennsylvania | Fair | 1950 | 76 | 39,934 |
| T-457 | Pennsylvania | Fair | 1950 | 76 | 46,178 |
| SR 4016 | Pennsylvania | Fair | 1950 | 76 | 46,178 |
| SR 0100 | Pennsylvania | Fair | 1950 | 76 | 46,178 |
| PA TPK RP CD | Pennsylvania | Fair | 1950 | 76 | 47,120 |
| T-466 | Pennsylvania | Fair | 1950 | 76 | 47,120 |
| SR 0401 LR 15139 | Pennsylvania | Fair | 1950 | 76 | 47,120 |
| T-443 (Howell Road) | Pennsylvania | Fair | 1950 | 76 | 47,120 |
About Historic Bridge Data
Bridges built before 1951 are classified as historic in this database. Many were designed to 1940s standards with lower load limits and narrower lanes. While FHWA requires regular inspections of all bridges regardless of age, older structures often require more frequent monitoring and rehabilitation investment.